What Bits Should Every DIYer Have for a Cordless Drill?

A cordless drill is one of the most useful DIY tools to have around the house, but the drill itself is only part of the setup. The right bits determine what materials you can work with, what size holes you can make, and whether you can handle common fastening jobs.

You do not need a massive collection to get started. A practical selection of cordless drill bits can cover most everyday tasks, from hanging shelves and assembling furniture to making pilot holes and working with different materials.

The key is choosing versatile drill bits that match the projects you actually do.

1. General-Purpose Drill Bits

Every DIYer should have a selection of general-purpose drill bits. These are useful for routine drilling where you do not need a highly specialized bit.

Depending on the bit design and manufacturer's specifications, general-purpose bits can be suitable for common materials such as wood, plastic, and some metals.

A range of commonly used sizes is more useful than buying dozens of unusual sizes. Smaller bits can help with pilot holes, while larger bits are useful when a project requires a wider opening.

When choosing cordless drill bits, always check the manufacturer's recommended materials and operating instructions rather than assuming one bit works for everything.

2. Wood Drill Bits

If you regularly work on shelves, furniture, wooden boxes, repairs, or other woodworking projects, wood drill bits are worth keeping in your DIY tools.

Wood-specific designs can make it easier to create clean holes in wood. Different designs are available for different applications, so the right choice depends on the type of hole and material you are working with.

For basic household projects, a few commonly used sizes will usually be more practical than a large collection of specialized woodworking bits.

If you frequently work with larger holes, you can add specialty wood-cutting accessories later rather than buying them before you need them.

3. Metal Drill Bits

Metal requires a bit designed for the material and the application. If you occasionally work with metal brackets, hardware, thin sheet metal, or other household metal components, having suitable metal drill bits can be useful.

Many DIYers will encounter metal when installing hardware or modifying household items, so including several appropriate sizes in your collection can make your cordless drill more versatile.

Pay attention to the material rating of the bit. Not every drill bit is intended for every type of metal, and harder materials may require a more specialized solution.

Using appropriate speed, pressure, and cutting conditions also matters. Avoid forcing the drill when the bit is not cutting effectively.

4. Smaller Bits for Pilot Holes

Pilot holes are an important part of many DIY projects, particularly when driving screws into wood or other materials where starting a fastener directly can be difficult.

For that reason, your cordless drill bits should include several smaller sizes that can be used for pilot holes.

The appropriate pilot-hole size depends on the fastener, material, and application. The goal is not simply to use the smallest bit available. Choose a size appropriate for the fastener and follow the recommendations for the material when available.

Keeping a few small bits readily available can save time during furniture assembly, shelving projects, and general repairs.

5. Larger Bits for Wider Holes

A useful drill bit set should not contain only tiny bits. Larger sizes become useful when you need to run cables, install hardware, make clearance holes, or complete other projects that require a wider opening.

However, you do not necessarily need every size available.

Think about the types of projects you normally undertake and choose larger bits around those needs. You can always add specialty sizes later when a particular project calls for them.

This keeps your collection more practical and prevents your toolbox from becoming filled with bits you rarely use.

6. Screwdriver Bits Are Also Worth Having

Technically, screwdriver bits are not drill bits, but they are among the most useful accessories for a cordless drill.

A cordless drill can be used to drive compatible screws when fitted with the appropriate screwdriver bit. Common profiles such as Phillips and slotted bits are useful for everyday household work, while other profiles can be added according to the fasteners you encounter.

This is one reason a cordless drill can be such a useful part of a DIY setup. You can switch between drilling and screwdriving without purchasing a separate powered screwdriver.

Just make sure you are using the correct bit for the screw head and avoid excessive force that could damage the fastener or bit.

7. Nut Driver Bits for Hex Fasteners

If you frequently encounter hex-head screws, nuts, or similar external-hex fasteners, nut driver bits can be another useful addition to your DIY tools.

Nut drivers are different from standard screwdriver bits because they are designed to engage external hex fasteners. Magnetic versions can help retain compatible fasteners during normal use.

You do not need every available size. Start with the sizes that match the hardware you commonly use and expand your collection if your projects require it.

How Many Bits Do You Actually Need?

There is no universal number of cordless drill bits that every DIYer needs. A useful starting point is a compact drill bit set containing several commonly used sizes, supplemented by screwdriver bits and any material-specific bits your projects require.

Rather than choosing a set because it has the highest piece count, consider what is actually included.

A smaller set with useful sizes and appropriate bit types can be more practical than a large assortment containing many pieces you rarely use.

Choosing Bits for Your Cordless Drill

Before buying drill bits, check your drill's chuck and the shank compatibility of the bits. Most common cordless drills can accept standard round or hex-shank accessories within the chuck's capacity, but compatibility should always be confirmed.

You should also consider the materials you expect to drill. A basic DIY setup might prioritize wood and general-purpose bits, while someone who frequently works with metal may need a different selection.

Keep your bits organized as well. A labeled case makes it easier to identify the size you need and reduces the temptation to use the wrong bit simply because it is already installed.

Build Your Collection Gradually

The best DIY tools are the ones you actually use. Instead of purchasing every type of drill bit at once, start with the sizes and materials most relevant to your projects.

A practical collection might include general-purpose bits, several wood and metal options, smaller pilot-hole sizes, a few larger sizes, and a selection of screwdriver bits. Nut driver bits can be added if your projects involve compatible hex fasteners.

As your experience grows, you will quickly learn which cordless drill bits you reach for most often.

Final Thoughts

Every DIYer does not need a huge box of drill bits. A carefully selected collection can handle a wide range of everyday projects while keeping your DIY tools organized and affordable.

Start with a practical drill bit set, choose sizes based on the work you actually do, and add specialized bits only when you need them. With the right combination of drill bits, screwdriver bits, and other compatible accessories, your cordless drill can become one of the most versatile tools in your toolbox.